Tools

Call DuckDuckGoTools from an OpenRouter Responses agent and stream the answer.

Tool use example using OpenRouter with the Responses API.

tool_use.py
"""Tool use example using OpenRouter with the Responses API.

This demonstrates using tools with OpenRouter's Responses API endpoint.

Requirements:
- Set OPENROUTER_API_KEY environment variable
"""

from agno.agent import Agent
from agno.models.openrouter import OpenRouterResponses
from agno.tools.duckduckgo import DuckDuckGoTools

# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------

agent = Agent(
    model=OpenRouterResponses(id="openai/gpt-oss-20b", reasoning={"enabled": True}),
    tools=[DuckDuckGoTools()],
    markdown=True,
)

agent.print_response("What is the latest news about AI?", stream=True)

# ---------------------------------------------------------------------------
# Run Agent
# ---------------------------------------------------------------------------

if __name__ == "__main__":
    pass

Run the Example

Set up your virtual environment

uv venv --python 3.12
source .venv/bin/activate

Install dependencies

uv pip install -U agno ddgs openai

Export your OpenRouter API key

export OPENROUTER_API_KEY="your_openrouter_api_key_here"

Run the example

Save the code above as tool_use.py, then run:

python tool_use.py

Full source: cookbook/90_models/openrouter/responses/tool_use.py